Boiler.



V Patented Dec. 2, 1902. J. c. 600KB songs.

(Application mad Oct. 4, 1901.)

2 Sheen -Shoot I.

"n4: uonms Ptrzns co PHnmun-(o WASHINGTON a c Patqntqd-Dec. 2, I902.

J. G. COUKE.

BOILER. (Application filed bt. 4, M501.)

2 Sheets8haat 2.

(No Model.)

'UNITED STATES ATENT JOHN C. COOKE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO NEV YORK SHIPBUILDING COMPANY, OF CAMDEN, NEW JERSEY, -A CORPO- RATION OF NEW JERSEY.

BOILER.

DPECIFICATION forming part Of Letters Patent N0. 714,783, dated Decemb 2, 1902.

Application filed October 4, 1901- fierial No. 77,517- (No model.)

To all whom it may concern.-

Beit known that I, JOHN C. COOKE, a citizen of the United States of America,residingiu the city and county of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Im provements in Water-Tube Boilers, of which the following is a true and exact description, reference being had to the accompan ying drawings, which form a part thereof.

My invention relates to water-tube boilers, having for its object to provide a simple and efficient construction for the circulation of the water and for the separation at a convenient point of sedimentary matter from the water.

The nature of my improvements will be best understood as described in connection with the drawings in which they are illustrated, and'in which Figure 1 is a sectional side elevation of my improved boiler; Fig. 2, a face view of one of the headers; Fig. 3, an enlarged sectional view ,taken in part through the headers and the similar headers.

ends of the duplex tubes connected therewith.

Fig. 4 is a sectional view,on still a larger scale, showing the connection of the tubes with the front header; Fig. 5, a sectional view on the line 5 5 of Fig. 4; Fig. 6, a sectional view on the line 6 6 of Fig. 4; Fig. 7, a sectional view illustrating a slight modification, and Fig. 8 a sectional view on the line 8 8 of Fig. 3.

A indicates the front header, having front and rear walls A and A and a longitudinal partition A dividing it into front and rear chambers a and a B indicates the rear header. It will be understoodthat in usual construction the front and rear of the boiler is made up of groups of O and E are the outer and inner duplex tubes, the tubes 0 connecting one of the chambers of the front header with the rear header. As shown, they are swaged at G into the wall A and have their ends projected into openings in the partition A as shown at C and screwed onto annular nuts (indicated at D) to the inner threaded perforation, in which is screwed the internal tube E, opening into the chamber a, while the outer tubes 0 open in the chamber a being cut away, as indicated at (J for this purpose. The rear ends of both tubes 0 and E open into the rear headers B, and, as shown, the inner tube is held in central position by flanges E extending out into contact with the rear end of the outer tubes. The chambers a and a of the front header connect through nozzlesFand F with a steam and water drum G, situated above the header, the chamber or connecting, as shown, through a passage formed by a partition G in the drum and opening into the steam-space and behind a baffle-plate G I indicates a mud-drum situated beneath the rear header B and connected therewith by nozzles H.

J is a bridge-wallbetween which and the front wall- K of the furnace are situated the grate-bars L, K indicating the furnace-door.

M is a forwardly and upwardly extending baffle reaching from the top of the bridge J.

N is a partition separating the boiler-chamber from the flue O and having a depending baffle-plate N, by means of which the products of combustion being first directed upwardly over the front end of the tubes are again directed downwardly over the center of the tubes and upwardly into the flue O.

The circulation in my improved boiler is from the drum G downward through the nozzles F into the chamber a, thence backward through the inner tubes E to the rear header B, and thence forward through the outer tubes 0 to the chamber a of the front header, through which the water passes upward into the nozzles F into the drum G, as shown, passing through the chamber formed by the partition G into the steam-space of the boiler. It will be obvious that by my construction sedimentary matter is inevitably caught in the bottoms of the rear headers and the mudreceptacle appended thereto.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a water-tube boiler the combination. with an upwardly and downwardly extending front a steam and water drurn connected tothe tops header A divided by a longitudinal partition of chambers a and a and a mud-receptacle 1o ibnto two chambers a and (1 of a single-chamat the bottom of the rear header.

or rear header B also extending upwardly and downwardly, duplex tubes 0 E connect- COOKE' ing said headers, the outer and inner tubes Witnesses: connecting to diiferent chambers of the front CHAS. F. MYERS, header and both opening into the rear header, D. STEWART. 

